I made a few changes: Made the tracks a bit thicker (0.64mm) fixed a connection to pin 14 of AD1865 that didnt exist, moved the regulator closer to analog +5v supply of the IC and also made a board without Mic5207 regs for experimentation purposes. I will probably etch and build the boards on monday hoping that alligning the toner transfers wont be a huge pain(also hoping that the boards actually work! ).

I etched the dac board and the psu board . Assembly is almost complete but it was slow because im having some health issues lately. Cant say for sure but im probably gonna finish by the end of the week

I run into a problem today. I soldered all regulators and went ahead with testing their voltages. The regs for positive supply all work ok, giving V+ 4.97-4.98V.
The regulator for the negative supply is measuring V+ 0.6v and gets very hot to touch. (By the way, the pictures i posted show the negative supply reg wired wrong)
I am using two seperate transformers to feed the regs with the ground pin of the negative supply reg as V-, and the Vout pin connected to ground plane.Am i overlooking something?

Using an 79l05 reg the dac works perfectly. Wired it today and sounds really good although using such a noisy reg for negative supply.Now i have to find a low noise negative reg with high-ish input voltage.I changed the layout of the board to reduce the number of slots in the ground plane. Picture quality is bad and the dac is a mess in its current form (long wires, uncut boards ,etc)

- If I was to connect 3 of these DACs to I2S out of Najda Digital XO, should I do something to synchronize properly the 3 DACs/avoid jitter (eg share the same clock ...)
- What is the best IV for these boards ? Zen/Cen/Sen ? (I have tube SRPP on my Raindrop board that work great, I could also duplicate them)